Synergistic Effect of Poultry Dropping and Poultry Dropping Biochar on Inorganic Contaminants in Soil

Abstract

Inorganic contaminants of soil in dump sites are a major problem across the world especially in developing nation like Nigeriawhere good waste management are not practice. Inorganic contaminants such as cadmium, chromium, lead, and arsenicare commonly found in open dumpsites, this is due to industrial and medical waste. They pose a serious risk to soil and plant over time because metals are not biodegradable, they can remain in the soil for long time if not remediated. In this study soil sample from threedifferent dumpsites was investigated for physiochemical properties, inorganic contaminant concentration, metal fractionation, metal
mobility and metal plant uptake. Poultry dropping and poultry dropping biochar were also assess for physicochemical properties. Synergistic effect of poultry dropping and poultry dropping biochar combination on inorganic contaminant concentration,metal fractionation and metal mobility in soil were also investigated. Particle size distribution revealed that parent soil is mostly sand and clay. Poultry dropping and poultry biochar results revealed high amount of pH and nutrients Geochemical fractionation of selected inorganic  contaminants (Cd,Cr, Mn, Pb and As) using sequential fractionation technique show that inorganic contaminantsincreases in the reduceable fraction (bioavailable) after incorporation of amender, poultry dropping, poultry dropping biochar and their combination. Poultry dropping, poultry biochar and their combination also decreases level of inorganic contaminant, metal mobility in soil and metal plant uptake.
These suggested that inorganic contaminant become relatively immobile after treatment with poultry dropping, poultry dropping biochar and their combination. In overall, poultry dropping, and poultry biochar combination gave a better inorganic contaminant remediation.